Z8F042ASB020EC Equivalent & Substitute Parts

Part Overview

The Z8F042ASB020EC is an 8-bit embedded microcontroller from Zilog's eZ8 Encore!® XP® series, featuring 4KB FLASH program memory, 1KB RAM, and 128 bytes EEPROM. This device integrates IrDA and UART/USART connectivity with comprehensive peripheral support including PWM, temperature sensing, and watchdog timer functionality. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

Z8F042ASB020EC

ZilogIn Stock: 1063Z8F042ASB020EC Datasheet

Current PartRFQ

Z8F042ASB020EG

ZilogIn Stock: 1228Z8F042ASB020EG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Z8F042ASB020EC is determined by strict equivalence across the following critical parameters:

• Processor Architecture: eZ8 core with identical instruction set compatibility
• Memory Configuration: 4KB FLASH, 1KB RAM, 128 bytes EEPROM
• Electrical Specifications: 2.7V ~ 3.6V supply voltage range, 20MHz clock speed
• Peripheral Feature Set: IrDA, UART/USART, PWM, temperature sensor, watchdog timer, brown-out detect/reset, LVD, POR, LED driver
• I/O Count: 6 I/O pins
• Package Specification: 8-SOIC surface mount package with identical pinout
• Operating Temperature Range: -40°C ~ 105°C

The Z8F042ASB020EG meets all substitution criteria as a direct equivalent within the Encore!® XP® series, with identical electrical and functional specifications.

Parameter Comparison

Engineering Selection Recommendations

The Z8F042ASB020EG is a direct functional equivalent to the Z8F042ASB020EC with identical electrical and operational specifications. The primary distinction is product lifecycle status: the Z8F042ASB020EC is obsolete while the Z8F042ASB020EG maintains active production status.

For new designs and ongoing system support, the Z8F042ASB020EG is the appropriate selection. This substitute provides ROHS3 compliance, addressing regulatory requirements that the original part does not meet. Both devices share identical core architecture, memory configuration, peripheral feature set, and package specifications, ensuring pin-for-pin and functional compatibility.

Frequently Asked Questions (FAQ)

Q: Are Z8F042ASB020EC and Z8F042ASB020EG pin-compatible?

A: Yes. Both devices use the 8-SOIC package with identical pinout and electrical specifications. Direct PCB substitution is supported without layout modifications.

Q: What is the difference between these two part numbers?

A: The Z8F042ASB020EG is the active production variant with ROHS3 compliance. The Z8F042ASB020EC is the obsolete predecessor with identical functionality but non-compliant RoHS status. The packaging differs (Tube for EG versus unspecified for EC), but electrical and functional parameters are equivalent.

Q: Can I use Z8F042ASB020EG in place of Z8F042ASB020EC in existing designs?

A: Yes. The substitute part maintains full functional and electrical equivalence. No firmware, software, or circuit modifications are required.

Q: Are there any compliance differences I should consider?

A: The Z8F042ASB020EG meets ROHS3 compliance requirements, while the Z8F042ASB020EC does not. For applications subject to RoHS regulations, the substitute is the compliant choice.

Q: What is the inventory status of these parts?

A: Z8F042ASB020EC: 993 pieces in stock. Z8F042ASB020EG: 1154 pieces in stock. Both are available as new original components.